CN102563969A - Double-system heat pump device capable of realizing circular heating and heating method - Google Patents
Double-system heat pump device capable of realizing circular heating and heating method Download PDFInfo
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- CN102563969A CN102563969A CN2012100296035A CN201210029603A CN102563969A CN 102563969 A CN102563969 A CN 102563969A CN 2012100296035 A CN2012100296035 A CN 2012100296035A CN 201210029603 A CN201210029603 A CN 201210029603A CN 102563969 A CN102563969 A CN 102563969A
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Abstract
The invention relates to a double-system heat pump device capable of realizing circular heating and a heating method. The double-system heat pump heating method capable of realizing circular heating is provided with two heat pump systems including a carbon dioxide heat pump system and a heat pump system without carbon dioxide, heat is absorbed from the external by the aid of the carbon dioxide heat pump system, and hot water is heated jointly by the aid of the carbon dioxide heat pump system and the heat pump system without carbon dioxide. The double-system heat pump device and the heating method have the advantages that the two heat pump systems form a circular heating system, after the carbon dioxide heat pump system heats the inlet hot water with high temperature, the temperature of carbon dioxide coolant is high, and further cooling is required; at the moment, heat of carbon dioxide gas which flows out from a gas cooler is absorbed by conventional heat pumps, and the temperature of the carbon dioxide gas is further reduced; and simultaneously, after absorbing energy of the carbon dioxide gas, the conventional heat pumps also make hot water.
Description
Technical field
The present invention relates to a kind of hydronic dual system heat pump assembly and heating method realized.
Background technology
In recent years; The attention of the natural refrigerant carbon dioxide is nontoxic because of it, not flammable, ozone layer destroying index GDP is 0, global warming is dived value GWP is advantage such as 1 receives more and more refrigeration industry, carbon dioxide be considered to heat pump working medium alternative in one of the most potential natural medium.The carbon dioxide heat-pump system relies on its particular performances, can produce the hot water more than 60 ℃ very easily.Even the good characteristic of carbon dioxide heat-pump system makes under the environment of low temperature, also can reach higher Energy Efficiency Ratio and hot water temperature.But it also has its limitation, and critical-temperature is 31 ℃, and the high-pressure side of systemic circulation is in nearly critical or supercriticality under the normal temperature cooling condition, is suitable for one-time heating hot water.When the hot water inflow temperature was higher, efficient significantly reduced, and was not suitable for the circulation heating of hot water.
The carbon dioxide heat-pump system has also been carried out many research abroad; Mainly concentrate on the domestic hot-water produce with the low-temperature floor radiant heating direction on; The carbon dioxide heat-pump water heater of producing like the DENSO company of Japan can be with the domestic hot-water from 30 ℃ of one-time heating to 90 ℃; The carbon dioxide heat-pump water heater that Japan DAKIN company produces not only can be produced the domestic hot-water, and can be used for floor panel heating.Carbon dioxide heat-pump is used for the also not appearance of system that the high temperature section hot water circuit heats.
Summary of the invention
The object of the invention is exactly the above-mentioned defective that exists to prior art; A kind of hydronic dual system heat pump assembly and heating method realized is provided; Can make carbon dioxide heat-pump need be applied to the hydronic place of high-temperature-hot-water, get into the carbon dioxide heat-pump system like hot water from 45 ℃ and be heated to 90 ℃.
The present invention mentions a kind ofly realizes hydronic dual system heat pump heating method, is made up of two cover heat pumps, and a cover is the carbon dioxide heat-pump system, and a cover is a non-carbon dioxide heat-pump system; Accomplished by the carbon dioxide heat-pump system from extraneous heat absorbing part, the heating part of hot water is accomplished by carbon dioxide heat-pump and non-carbon dioxide heat-pump system jointly;
Wherein, the carbon dioxide heat-pump system is connected to form by compressor, gas cooler, heat exchanger, Intermediate Heat Exchanger, expansion valve, evaporimeter, gas-liquid separator, magnetic valve successively, and described gas-liquid separator is provided with electric heater unit; Described non-carbon dioxide heat-pump system is made up of compressor, condenser, choke valve and heat exchanger;
It heats step:
A) the HTHP carbon dioxide coolant of compressor discharge gets into the gas cooler heat hot water;
B) carbon dioxide coolant that comes out from gas cooler gets into heat exchanger, further cooling;
C) carbon dioxide coolant that comes out from heat exchanger gets into Intermediate Heat Exchanger and carries out heat exchange;
The carbon dioxide coolant process expansion valve throttling step-down of d) coming out from middle heat exchanger becomes gas-liquid mixture;
E) carbon dioxide coolant that comes out from expansion valve gets into evaporimeter and absorbs heat;
F) carbon dioxide coolant that comes out from evaporimeter gets into gas-liquid separator and carries out gas-liquid separation, and gas flows out from gas-liquid separator top, and liquid and lubricating oil flow out through magnetic valve from the gas-liquid separator bottom, and the machine that is compressed after the mixing absorbs;
G) carbon dioxide coolant that comes out from gas-liquid separator gets into Intermediate Heat Exchanger and is heated;
H) carbon dioxide coolant that comes out from the middle heat exchanger machine that is compressed absorbs, and realizes that one complete heats circulation;
I) hot water is heated in high temperature refrigerant heat release in condenser of compressor discharge;
G) after refrigerant comes out from condenser, after the choke valve throttling, get into heat exchanger;
K) after refrigerant got into heat exchanger, the energy in the absorbing carbon dioxide gas was accomplished evaporation;
L) after refrigerant comes out from heat exchanger, be compressed the machine compression, accomplish the circulation of a completion.
A kind of hydronic dual system heat pump assembly of realizing provided by the invention; Form by carbon dioxide heat-pump system and non-carbon dioxide heat-pump system; Described carbon dioxide heat-pump system is connected to form by compressor, gas cooler, heat exchanger, Intermediate Heat Exchanger, evaporimeter, gas-liquid separator, and an end of gas cooler connects compressor, and the other end connects heat exchanger; Heat exchanger connects Intermediate Heat Exchanger, and Intermediate Heat Exchanger connects evaporimeter and gas-liquid separator through expansion valve; Wherein, heat exchanger connects non-carbon dioxide heat-pump system, and described non-carbon dioxide heat-pump system is connected to form by compressor, condenser, choke valve and heat exchanger successively, and refrigerant carries out the heat exchange evaporation through heat exchanger, through condenser hot water is heated.
Above-mentioned gas-liquid separator is provided with electric heater unit.
The invention has the beneficial effects as follows: form loop heating system through two cover heat pumps, the carbon dioxide heat-pump system is behind the higher hot water of heating inflow temperature, and the temperature of carbon dioxide refrigerant is still higher, needs further cooling; At this moment, the temperature through the non-carbon dioxide heat-pump of routine system absorbs the carbon dioxide that comes out from gas cooler makes it further reduction; Simultaneously, after conventional non-carbon dioxide heat-pump system has absorbed the energy of carbon dioxide, also produce hot water.Like this, can reach and use the carbon dioxide heat-pump system to obtain the hydronic purpose of high-temperature-hot-water (45 ℃-90 ℃), can make carbon dioxide heat-pump need be applied to the hydronic place of high-temperature-hot-water.
Description of drawings
Accompanying drawing 1 is a heating method sketch map of the present invention;
Among the last figure: compressor 1, gas cooler 2, heat exchanger 3, Intermediate Heat Exchanger 4, expansion valve 5, evaporimeter 6, gas-liquid separator 7, magnetic valve 8, compressor 9, condenser 10, choke valve 11, electric heater unit 12.
The specific embodiment
In conjunction with accompanying drawing, the present invention is done further description:
The present invention mentions a kind ofly realizes hydronic dual system heat pump heating method, is made up of two cover heat pumps, and a cover is the carbon dioxide heat-pump system, and a cover is a non-carbon dioxide heat-pump system; Accomplished by the carbon dioxide heat-pump system from extraneous heat absorbing part, the heating part of hot water is accomplished by carbon dioxide heat-pump and non-carbon dioxide heat-pump system jointly;
Wherein, the carbon dioxide heat-pump system is connected to form by compressor 1, gas cooler 2, heat exchanger 3, Intermediate Heat Exchanger 4, expansion valve 5, evaporimeter 6, gas-liquid separator 7, magnetic valve 8 successively, and described gas-liquid separator 7 is provided with electric heater unit 12; Described non-carbon dioxide heat-pump system is made up of compressor 9, condenser 10, choke valve 11 and heat exchanger 3;
It heats step:
The HTHP carbon dioxide coolant that a compressor 1 is discharged gets into gas cooler 2 heat hot water;
B gets into heat exchanger 3 from the carbon dioxide coolant that gas cooler 2 comes out, further cooling;
The carbon dioxide coolant that c comes out from heat exchanger 3 gets into Intermediate Heat Exchanger 4 and carries out heat exchange;
D becomes gas-liquid mixture from the carbon dioxide coolant process expansion valve 5 throttling step-downs that middle heat exchanger 4 comes out;
The carbon dioxide coolant that e comes out from expansion valve 5 gets into evaporimeter 6 and absorbs heat;
The carbon dioxide coolant that f comes out from evaporimeter 6 gets into gas-liquid separator 7 and carries out gas-liquid separation, and gas flows out from gas-liquid separator top, and liquid and lubricating oil flow out through magnetic valve (8) from gas-liquid separator (7) bottom, and the machine that is compressed after the mixing absorbs;
The carbon dioxide coolant that g comes out from gas-liquid separator 7 gets into Intermediate Heat Exchanger 4 and is heated;
The carbon dioxide coolant that h comes out from middle heat exchanger 4 is compressed machine 1 and absorbs, and realizes that one complete heats circulation;
Hot water is heated in high temperature refrigerant heat release in condenser 10 that i compressor 9 is discharged;
After the g refrigerant comes out from condenser 10, after choke valve 11 throttlings, get into heat exchanger 3;
After the k refrigerant got into heat exchanger 3, the energy in the absorbing carbon dioxide gas was accomplished evaporation;
After the l refrigerant comes out from heat exchanger, be compressed the machine compression, accomplish the circulation of a completion.
A kind of hydronic dual system heat pump assembly of realizing provided by the invention; Form by carbon dioxide heat-pump system and non-carbon dioxide heat-pump system; Described carbon dioxide heat-pump system is connected to form by compressor 1, gas cooler 2, heat exchanger 3, Intermediate Heat Exchanger 4, evaporimeter 6, gas-liquid separator 7; One end of gas cooler 2 connects compressor 1; The other end connects heat exchanger 3, and heat exchanger 3 connects Intermediate Heat Exchanger 4, and Intermediate Heat Exchanger 4 connects evaporimeter 6 and gas-liquid separator 7 through expansion valve 5; Wherein, The non-carbon dioxide heat-pump of heat exchanger 3 connections system; Described non-carbon dioxide heat-pump system is connected to form by compressor 9, condenser 10, choke valve 11 and heat exchanger 3 successively, and refrigerant carries out the heat exchange evaporation through heat exchanger 3, heats through 10 pairs of hot water of condenser.
With reference to Fig. 1, apparatus of the present invention have designed two cover heat pumps and have made up, and after carbon dioxide coolant comes out from gas cooler 2, get into heat exchanger 3, by the cooling of further lowering the temperature of non-carbon dioxide heat-pump system.
With reference to Fig. 1, the hot water parallel connection gets into carbon dioxide heat-pump and heat pump.
With reference to Fig. 1, evaporimeter 6 both can absorb heat from air, also can from water, absorb heat.
With reference to Fig. 1, gas-liquid separator 7 is designed with electric heater unit 12.
Heat pump assembly is accomplished by the carbon dioxide heat-pump system from extraneous heat absorbing part, and the heating part of hot water is accomplished by carbon dioxide heat-pump and non-carbon dioxide heat-pump system jointly.
Hot water parallel connection gets into the carbon dioxide heat-pump system and non-carbon dioxide heat-pump system is heated.
The carbon dioxide heat-pump system is behind the higher hot water of heating inflow temperature, and the temperature of carbon dioxide refrigerant is still higher, needs further cooling.At this moment, the non-carbon dioxide heat-pump through routine absorbs the temperature of the carbon dioxide that comes out from gas cooler, makes it further reduction.Simultaneously, after conventional heat pump has absorbed the energy of carbon dioxide, also produce hot water.
According to the difference of hot water effluent's temperature requirements, non-carbon dioxide heat-pump system can adopt the different technologies route, and the hot water of producing different leaving water temperatures cooperates with the carbon dioxide heat-pump system.Heat pump such as adopting the R22 refrigerant is produced 50 ℃ of hot water, adopt the heat pump of R134a refrigerant can produce 65 ℃ of hot water, or other refrigerant systems produces higher hot water.
The heat absorbing end of carbon dioxide heat-pump system both can be absorbed heat from air, also can from water, absorb heat.
In the heat exchanger 3, non-carbon dioxide heat-pump system absorbs the energy of the carbon dioxide that from gas cooler 2, comes out.
Claims (3)
1. can realize hydronic dual system heat pump heating method for one kind, it is characterized in that: is made up of two cover heat pumps, a cover is for the carbon dioxide heat-pump system, and a cover is a non-carbon dioxide heat-pump system; Accomplished by the carbon dioxide heat-pump system from extraneous heat absorbing part, the heating part of hot water is accomplished by carbon dioxide heat-pump and non-carbon dioxide heat-pump system jointly;
Described carbon dioxide heat-pump system is connected to form by compressor (1), gas cooler (2), heat exchanger (3), Intermediate Heat Exchanger (4), expansion valve (5), evaporimeter (6), gas-liquid separator (7), magnetic valve (8) successively, and described gas-liquid separator (7) is provided with electric heater unit (12); Described non-carbon dioxide heat-pump system is made up of compressor (9), condenser (10), choke valve (11) and heat exchanger (3);
It heats step:
A) the HTHP carbon dioxide coolant of compressor (1) discharge gets into gas cooler (2) heat hot water;
B) carbon dioxide coolant that comes out from gas cooler (2) gets into heat exchanger (3), further cooling;
C) carbon dioxide coolant that comes out from heat exchanger (3) gets into Intermediate Heat Exchanger (4) and carries out heat exchange;
Carbon dioxide coolant process expansion valve (5) the throttling step-down of d) coming out from middle heat exchanger (4) becomes gas-liquid mixture;
E) carbon dioxide coolant that comes out from expansion valve (5) gets into evaporimeter (6) and absorbs heat;
F) carbon dioxide coolant that comes out from evaporimeter (6) gets into gas-liquid separator (7) and carries out gas-liquid separation; Gas flows out from gas-liquid separator top; Liquid and lubricating oil flow out through magnetic valve (8) from gas-liquid separator (7) bottom, and the machine that is compressed after the mixing absorbs;
G) carbon dioxide coolant that comes out from gas-liquid separator (7) gets into Intermediate Heat Exchanger (4) and is heated;
H) carbon dioxide coolant that comes out from middle heat exchanger (4) is compressed machine (1) and absorbs, and realizes that one complete heats circulation;
I) hot water is heated in high temperature refrigerant heat release in condenser (10) of compressor (9) discharge;
G) after refrigerant comes out from condenser (10), after choke valve (11) throttling, get into heat exchanger (3);
K) after refrigerant got into heat exchanger (3), the energy in the absorbing carbon dioxide gas was accomplished evaporation;
L) after refrigerant comes out from heat exchanger, be compressed the machine compression, accomplish the circulation of a completion.
2. can realize hydronic dual system heat pump assembly for one kind; It is characterized in that: form by carbon dioxide heat-pump system and non-carbon dioxide heat-pump system; Described carbon dioxide heat-pump system is connected to form by compressor (1), gas cooler (2), heat exchanger (3), Intermediate Heat Exchanger (4), evaporimeter (6), gas-liquid separator (7); One end of gas cooler (2) connects compressor (1); The other end connects heat exchanger (3), and heat exchanger (3) connects Intermediate Heat Exchanger (4), and Intermediate Heat Exchanger (4) connects evaporimeter (6) and gas-liquid separator (7) through expansion valve (5); Wherein, The non-carbon dioxide heat-pump of heat exchanger (3) connection system; Described non-carbon dioxide heat-pump system is connected to form by compressor (9), condenser (10), choke valve (11) and heat exchanger (3) successively; Refrigerant carries out the heat exchange evaporation through heat exchanger (3), through condenser (10) hot water is heated.
3. according to claim 2ly realize hydronic dual system heat pump assembly, it is characterized in that: described gas-liquid separator (7) is provided with electric heater unit (12).
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Cited By (7)
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| CN103900281A (en) * | 2014-03-21 | 2014-07-02 | 山东美琳达再生能源开发有限公司 | Carbon dioxide heat pump device capable of achieving circulation heating and use method |
| CN105042672A (en) * | 2015-09-01 | 2015-11-11 | 中国铁道科学研究院 | Air source CO2 heat pump system suitable for connecting heating radiators |
| CN106196683A (en) * | 2016-08-10 | 2016-12-07 | 燕园德普科技（北京）有限公司 | A kind of super low temperature heat pump system for heating and control method thereof |
| CN107328102A (en) * | 2017-08-18 | 2017-11-07 | 中国扬子集团滁州扬子空调器有限公司 | A kind of carbon dioxide combined heat pump hot water and air-conditioning system and its control method |
| CN108458512A (en) * | 2018-03-13 | 2018-08-28 | 中铁工程设计咨询集团有限公司 | A kind of carbon dioxide air source heat pump system |
| CN109323477A (en) * | 2018-09-11 | 2019-02-12 | 西安交通大学 | It is a kind of based on the Trans-critical cycle CO with forecooler2Heat pump system and its water route two-way valve control method |
| CN110243100A (en) * | 2019-05-27 | 2019-09-17 | 山东美琳达再生能源开发有限公司 | Hydronic carbon dioxide heat pump device can be achieved in one kind |
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| CN103900281A (en) * | 2014-03-21 | 2014-07-02 | 山东美琳达再生能源开发有限公司 | Carbon dioxide heat pump device capable of achieving circulation heating and use method |
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| CN108458512A (en) * | 2018-03-13 | 2018-08-28 | 中铁工程设计咨询集团有限公司 | A kind of carbon dioxide air source heat pump system |
| CN109323477A (en) * | 2018-09-11 | 2019-02-12 | 西安交通大学 | It is a kind of based on the Trans-critical cycle CO with forecooler2Heat pump system and its water route two-way valve control method |
| CN109323477B (en) * | 2018-09-11 | 2020-05-19 | 西安交通大学 | Transcritical CO based on take precooler2Heat pump system and water path two-way valve control method thereof |
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Application publication date: 20120711 |